Influence of Annealing Temperature on Structural, Electrical, and Magnetic Properties of Nd0.7Ca0.3MnO3

Authors

Sara A. Mohamed, Physics Department, Faculty of Science, Sohag University, Sohag 82524, EgyptFollow
I. A. Abdel-Latif, Reactor Physics Department, Reactors Division, Nuclear Research Center, Egyptian Atomic Energy Authority, Cairo, EgyptFollow
Ibrahim Y. Khaled, Physics Department, Faculty of Science, Sohag University, Sohag 82524, EgyptFollow
Mahrous R. Ahmed, Physics Department, Faculty of Science, Sohag University, Sohag 82524, EgyptFollow

Abstract

In this paper, we investigated the effect of annealing temperature on the electrical and magnetic properties of polycrystalline Nd0.7Ca0.3MnO3 synthesized using the well-known solid-state reaction technique. After the formation of the required Perovskite crystal structure phase, another annealing treatment has been done. The selected annealing temperatures are 700, 800, and 900°C for 12 hours. Structural refinement of the X-ray diffraction patterns showed the formation of a single orthorhombic crystal structure phase the of P b n m space group in Nd0.7Ca0.3MnO3 without any impurity peaks. From magneto-resistance measurements, we found that NCMO samples have high-colossal magnetoresistance (CMR). Moreover, the under-investigated NCMO samples showed a high power factor. The resistivity data in the insulating region (T >TMI) were analyzed by considering, the Mott-variable range hopping model. The phase transition temperature showed dependence on the grain size, where Curie temperature (TC) increases with an increase in the grain size.

Recommended Citation

A. Mohamed, Sara; A. Abdel-Latif, I.; Y. Khaled, Ibrahim; and R. Ahmed, Mahrous (2023) "Influence of Annealing Temperature on Structural, Electrical, and Magnetic Properties of Nd0.7Ca0.3MnO3," Information Sciences Letters: Vol. 12 : Iss. 10 , PP -.
Available at: https://digitalcommons.aaru.edu.jo/isl/vol12/iss10/6